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41.发明申请公开(公告)号：US20190137045A1
公开(公告)日：2019-05-09
申请号：US16024513
申请日：2018-06-29
Applicant: Hifi Engineering Inc.
Inventor： Seyed Ehsan Jalilian , Arne Dankers , David Westwick
Abstract: Methods, systems, and techniques for determining whether an acoustic event has occurred along a fluid conduit having acoustic sensors positioned therealong. The method uses a processor to, for each of the sensors, determine a predicted acoustic signal using one or more past acoustic signals measured prior to measuring a measured acoustic signal using the sensor; determine a prediction error between the measured acoustic signal and the predicted acoustic signal; from the prediction error, determine a power estimate of an acoustic source located along a longitudinal segment of the fluid conduit overlapping the sensor; and determine whether the power estimate of the acoustic source exceeds an event threshold for the sensor. When the power estimate of at least one of the acoustic sources exceeds the event threshold, the processor attributes the acoustic event to one of the sensors for which the power estimate of the acoustic source exceeds the event threshold.
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公开(公告)号：US20180356210A1
公开(公告)日：2018-12-13
申请号：US15868766
申请日：2018-01-11
Applicant: Hifi Engineering Inc.
Inventor： Brian H. Moore , Walter Jeffrey Shakespeare , Phillip William Wallace , Viet Hoang , Chris Henrikson , Ajay Sandhu , Adrian Dumitru , Thomas Clement , Dongliang Huang , Seyed Ehsan Jalilian
CPC classification number: G01B11/161 , G01D5/35316 , G01D5/35383 , G01H9/004 , G01K11/3206 , G01L1/246
Abstract: There is described a method for interrogating optical fiber comprising fiber Bragg gratings (“FBGs”), using an optical fiber interrogator. The method comprises (a) generating an initial light pulse from phase coherent light emitted from a light source, wherein the initial light pulse is generated by modulating the intensity of the light; (b) splitting the initial light pulse into a pair of light pulses; (c) causing one of the light pulses to be delayed relative to the other of the light pulses; (d) transmitting the light pulses along the optical fiber; (e) receiving reflections of the light pulses off the FBGs; and (f) determining whether an optical path length between the FBGs has changed from an interference pattern resulting from the reflections of the light pulses.
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公开(公告)号：US20180209453A1
公开(公告)日：2018-07-26
申请号：US15739336
申请日：2016-06-27
Applicant: Hifi Engineering Inc.
Inventor： John HULL , Seyed Ehsan JALILIAN , Derek LOGAN
Abstract: A clamp for clamping optical fiber to a tube. The clamp has a body portion coupled at one end to a first arm and at an opposing end to a second arm, and a resilient portion to permit the clamp to elastically deform from a closed state in which the clamp is fastened around the tube to an open state in which the clamp is radially moveable off the tube. At least one of the body portion, the first arm and the second arm has a clamping surface to clamp a portion of the optical fiber against the tube when the clamp is fastened around the tube, and a clamping mechanism operable to extend at least part of the clamping surface towards the tube when the clamp is secured to the tube to increase a clamping force applied by the clamping surface.
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44.发明授权公开(公告)号：US09606250B2
公开(公告)日：2017-03-28
申请号：US13958358
申请日：2013-08-02
Applicant: HiFi Engineering Inc.
Inventor： John Hull , Seyed Ehsan Jalilian , Philip Cheuk
IPC: G01N29/07 , G01N29/11 , G01N29/14 , G01V1/00 , G01S5/18 , G01N29/36 , E21B47/10 , G01V1/28 , G01N29/44
CPC classification number: G01V1/001 , E21B47/101 , G01N29/07 , G01N29/11 , G01N29/14 , G01N29/36 , G01N29/44 , G01N29/4409 , G01N29/4454 , G01S5/18 , G01S5/186 , G01V1/288 , G01V2210/123 , G01V2210/65
Abstract: A method for determining relative location of an acoustic event along a channel such as a wellbore includes obtaining two acoustic signals at are obtained at two different and known depths in the wellbore, dividing the acoustic signals into windows, and determining the relative loudnesses of pairs of the windows. The power of the acoustic signals may be used as a proxy for the loudness of the acoustic event, and this determination can be made in the time or frequency domains. The relative depth of the acoustic event can then be determined relative to the two known depths from the relative loudnesses. The acoustic event may be, for example, casing vent flow, gas migration, a leak along a pipeline, or sounds observed in an observation well from a nearby well in which fracking is being performed.
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公开(公告)号：US20160312604A1
公开(公告)日：2016-10-27
申请号：US15105386
申请日：2014-12-15
Applicant: HIFI ENGINEERING INC.
Inventor： John Hull , Neil Gulewicz , Seyed Ehsan Jalilian
CPC classification number: E21B47/101 , E21B41/00 , G10K11/002
Abstract: A sound baffle device for use with an acoustic sensor deployed in a housing by a deployment line is disclosed. The sound baffle device comprises a radially extending baffle plate and an affixing mechanism for affixing the baffle plate to the deployment line. The baffle plate is configured to reduce acoustic transmission between a first zone of the housing on one side of the baffle plate and a second zone of the housing on an opposite side of the baffle plate. A system for detecting acoustic signals in a zone of interest in a housing is also disclosed. The system comprises an acoustic sensor positioned in the zone of interest and one or more than one sound baffle positioned between the zone of interest and a first zone of the housing. The sound baffle is configured to reduce acoustic transmission from the first zone to the zone of interest. The sound baffle provides some level of acoustic isolation between two zones on either side of the baffle plate thereby aiding detection and identification of acoustic signals in the zone of interest by reducing transmission of acoustic signals from the first zone to the zone of interest.
Abstract translation: 公开了一种用于通过部署线路部署在壳体中的声学传感器使用的隔音装置。 隔音装置包括径向延伸的挡板和用于将挡板固定到展开线的固定机构。 所述挡板被构造成减小所述挡板的一侧上的所述壳体的第一区域与所述挡板相对侧上的所述壳体的第二区域之间的声传播。 还公开了一种用于检测壳体中感兴趣区域中的声信号的系统。 该系统包括位于感兴趣区域中的声学传感器和位于感兴趣区域和壳体的第一区域之间的一个或多个声音挡板。 声音挡板被配置为减少从第一区域到感兴趣区域的声学传播。 隔音板在挡板两侧的两个区域之间提供一定程度的声学隔离，从而通过减少从第一区域到感兴趣区域的声信号的传输来帮助检测和识别感兴趣区域中的声信号。
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Patent Agency Ranking
公开(公告)号：US20160305235A1
公开(公告)日：2016-10-20
申请号：US15103750
申请日：2014-12-10
Applicant: HIFI ENGINEERING INC.
Inventor： John Hull , Seyed Jalilian
CPC classification number: E21B47/101 , E21B47/00 , E21B47/1025 , G01H9/004 , G01M3/047 , G01M3/165 , G01M3/243
Abstract: An apparatus for detecting acoustic signals in housing is disclosed. The housing may be housing of a wellbore, riser, tubular or pipeline or the like for transporting fluids or housing of a vessel for storing fluids. The apparatus comprises a longitudinally extending tube having an internal surface and an external surface, a longitudinally extending fibre optic cable disposed within the tube, and one or more than one longitudinally extending outer fins radially extending outwards from and coupled with the external surface of the tube. The outer fin is configured to project towards the housing and allows fluid between the external surface of the tube and the housing when the apparatus is positioned in the housing. The apparatus may alternatively comprise a longitudinally extending fibre optic cable coated with a coating and one or more than one longitudinally extending outer fin radially extending outwards from and coupled with the coated fibre optic cable.
Abstract translation: 公开了一种用于检测壳体中的声信号的装置。 壳体可以是用于输送用于储存流体的容器的流体或壳体的井眼，立管，管状或管道等的壳体。 该装置包括纵向延伸的管，其具有内表面和外表面，设置在管内的纵向延伸的光纤电缆，以及一个或多于一个纵向延伸的外部翅片，其径向向外延伸并与管的外表面耦合 。 外翅片构造成朝向壳体突出，并且当装置定位在壳体中时允许管的外表面和壳体之间的流体。 该装置可以替代地包括涂覆有涂层的纵向延伸的光纤电缆和从涂覆的光纤电缆向外延伸并与其连接的一个或多于一个纵向延伸的外部散热片。
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公开(公告)号：US12130207B2
公开(公告)日：2024-10-29
申请号：US17634525
申请日：2020-08-10
Applicant: HIFI ENGINEERING INC.
Inventor： Niloufar Ghazavi , Arne Dankers , Seyed Ehsan Jalilian
Abstract: Using at least one sensor positioned to monitor a fluid conduit, an acoustic event is detected. A speed of sound of the acoustic event is determined. The speed of sound of the acoustic event is compared to a baseline speed of sound. Based on the comparison, whether or not a leak has occurred in the fluid conduit may be determined.
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公开(公告)号：US20230408366A1
公开(公告)日：2023-12-21
申请号：US18366548
申请日：2023-08-07
Applicant: Hifi Engineering Inc.
Inventor： Arne Dankers , Seyed Ehsan Jalilian
IPC: G01M3/38
CPC classification number: G01M3/38 , E21B47/117
Abstract: There are described methods, systems, and computer-readable media for detecting events in a conduit. Multiple lengths of optical fiber positioned alongside a conduit are used to detect a signal. For each length of optical fiber, interferometric data is obtained from the detected signal. The interferometric data obtained for one length of optical fiber is compared to the interferometric data obtained for one or more other lengths of optical fiber. Based on the comparison, it is determined whether the signal originated from the conduit.
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公开(公告)号：US11448548B2
公开(公告)日：2022-09-20
申请号：US17053041
申请日：2019-05-07
Applicant: Hifi Engineering Inc.
Inventor： Arne Dankers , Seyed Ehsan Jalilian
Abstract: An optical fiber assembly comprising an optical fiber casing and optical fiber deployed within and fixed relative to the casing at multiple fixation points spaced along the casing. The optical fiber assembly includes one or more weights attached within the casing to the optical fiber, for increasing a tension of the optical fiber between the multiple fixation points; flexible portions and rigid portions, with the optical fiber fixed to the flexible portions; and/or at least one guide member positioned at at least one of the fixation points and configured to constrain a bend radius of the optical fiber.
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公开(公告)号：US11428885B2
公开(公告)日：2022-08-30
申请号：US17094203
申请日：2020-11-10
Applicant: Hifi Engineering Inc.
Inventor： John Hull , Neil Gulewicz , Robert Sokolowski , Oleksiy Pletnyov , Souheil Merhi , Philip Cheuk , Seyed Ehsan Jalilian
IPC: G02B6/44
Abstract: There are described methods and systems for deploying optical fiber within a conduit. In one aspect, an optical fiber injector comprising a pressure vessel having a fluid inlet and a fluid outlet. The fluid outlet is engaged with an open end of the conduit. A length of optical fiber is provided within the pressure vessel. The optical fiber is then jetted into the conduit by injecting a fluid into the pressure vessel via the fluid inlet. The optical fiber injector is configured such that the fluid is directed from the fluid inlet to the fluid outlet, and urges the optical fiber to move through the conduit, thereby deploying the optical fiber within the conduit. In a further aspect, there is provided a modular assembly comprising a pipeline and a line of two or more conduits arranged end-to-end. Each pair of opposing ends of adjacent conduits is connected together by a separate splice box. The line is positioned along and adjacent to a length of the pipeline.
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